Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

-3/2*x-4 == 5/2

⇒ algebra.equations.linear.balance.remove-div, factor=2

-3*x-8 == 5

⇒ algebra.equations.linear.balance.con-right-plus, term=8

-3*x == 13

⇒ algebra.equations.linear.balance.scale-to-one, factor=-3

x == -13/3